Fig. 2. Cytotoxic effect of methanolic extracts from Chlorella vulgaris(A) and Parachlorella sp.(B) on human breast epithelial cells. The cells were treated with extract of Chlorella vulgaris and Parachlorella sp. for 48 hr and the cell viabilities were assessed by WST-1 assay. Data represent the mean ± SEM of three independent experiments. *p < 0.05, and **p < 0.01 versus non-treated cells.
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